Sewer-gas excluder for wash-basins



(No Model.)

F. B. HERBERT. SEWER GAS EXGLUDER FOR WASH BASINS.

No. 427,323. Patented May 6, 1890.

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l Ml 'INVENTOR: 2 WW BY mm ATTORNEYI'S.

UNITED STATES PATENT OFFICE.

FRANCIS B. HERBERT, OF HOBOKEN, NEW JERSEY.

SEWER-GAS EXCLUDER FOR WASH-BASINS.

SPECIFICATION forming part of Letters Patent No. 427,323, dated May 6, 1890.

Application filed April 11, 1889' Serial No. 306,903- (NO 056 0 To all whom it may concern:

Be it known that I, FRANCIS B. HERBERT, of I-Ioboken, in the county of Hudson and State of New Jersey, have invented a new and Improved Sewer-Gas Excluder for Vash- Basins, of which the following is a full, clear,

and exact description.

The object of the invention is to provide an attachment to be applied to the overflow-apertures of wash-basins for preventing the esthereto.

cape therethrough of sewer-gas.

The invention consists in the novel contrivance hereinafter described and claimed.

Reference is to be had to the accompanying drawings, forming apart of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure 1 is a vertical sectional elevation of a wash-basin, showing my invention applied Fig. 2 is a front view of my improved attachment. Fig. 3 is a vertical sectional elevation on line a: 00, Fig. 2. Fig. 4 is a longitudinal sectional elevation on line y y, Fig. 2; and Figs. 5, 6, and 7 are details.

Referring to the parts, the letter A indicates an ordinary wash-basin, and a the overflow-apertures thereof. Above the overflowapertures a the gas-excluding attachment B is suspended from suitable hangers C. The

attachment consists of a buoyant flap B,

formed of cork l) or other buoyant material, which is covered by sheet-rubber covering 1) or other water-proof material, and is provided along its upper edge with two or more eyes b for suspending it from the hangers C. The eyes b are preferably formed on a wire rod N, which lies beneath and is concealed by the rubber covering 1). The hangers C may be formed as in Fig. 5, in which its shank com- 0 prises a vertical portion a and a horizontal portion 0', the latter being covered with cork or rubber to adapt it to fit snugly in the ordinary overflow-apertures, and by reason of the vertical shank the top of the attachment B will be above the top overflow-apertures. In the form shown in Fig.7 is showna hanger designed for use with basins which shall be provided with two apertures above the overflow-apertures, into the former of which the shanks o are inserted. Ordinarily the rising water in the basin will float the buoyant attachment, swinging it on its suspendingbrackets and enabling the Water to escape through the overflow-apertures. To insure the floating of the attachment at all times, its upper end is made of increased thickness, giving it a correspondingly-increased buoyancy, and should the attachment be held against the apertures by mischievous children as the Water rises the attachment upon being released will be lifted bodily off its hangers. Vere it of a uniform buoyancy throughout, it might be held against the apertures by the pressure of the Water.

In practice the cork l) and its Water-proof inclosing-bag b will be so fashioned as to conform approximately to the curve of the basin to fairly seat itself against the latter. The cork is preferably dished or hollowed out, as shown, to increase its buoyancy.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-- A gas-excluding attachment for washbasins, comprising a buoyant water-proof flap provided with eyes along its upper edge and hangers adapted to fit in the uppermost overflow-apertures of a basin and hold the flap over the said apertures, substantially as herein shown and described.

FRANCIS B. HERBERT.

Witnesses:

J. L. MOAULIFFE, O. SEDGWICK. 

